(2017) More than 150 croswords to test general knowledge, arranged in four levels from beginners to ace puzzlers Addictive, fun, and conveniently compact, this cool little book of crosswords will test word power and keep boredom at bay. For newbies there is an introduction to the rules of crosswords, the most popular printed puzzles of all time, and for anyone struggling to get the final clue, all the answers are in the back of the book.